piggy vs razorback

piggy

noun

  • A pig (the animal). 

  • A toe. 

  • A pig, a greedy person. 

  • A member of the police. 

  • A guinea pig. 

adj

  • slovenly, dirty 

  • greedy 

razorback

noun

  • A feral pig. 

  • The rorqual or finback whale. 

How often have the words piggy and razorback occurred in a corpus of books? (source: Google Ngram Viewer )